private void btnMbSend_Click(object sender, EventArgs e)
{
var sd = ModBus.HexStrToHexByte(txtMbData.Text.Trim());//开
_serverSocket.Send(sd, sd.Length, 0);
ShowMsg("已发送：" + txtMbData.Text.Trim());
}
private void btnSend_Click(object sender, EventArgs e)
{
if (cmbFunc.SelectedIndex == 1)//读
{
var sd = ModBus.ModBusWrite(int.Parse(txtSlave.Text.Trim()), ModBus.ModBusFunction.WriteCoil,
int.Parse(txtAddr.Text.Trim()), cmbData.SelectedIndex == 0);//写数据
_serverSocket.Send(sd, sd.Length, 0);
ShowMsg("已发送：" + ModBus.HexByteToHexStr(sd));
}
else//写
{
var sd = ModBus.ModBusRead(int.Parse(txtSlave.Text.Trim()), ModBus.ModBusFunction.ReadCoils,
int.Parse(txtAddr.Text.Trim()), 1);//写数据
_serverSocket.Send(sd, sd.Length, 0);
ShowMsg("已发送：" + ModBus.HexByteToHexStr(sd));
}
}
private void ListenSlave(object s)
{
try
{
byte[] recByte = new byte[1024];
while (true)
{
var bytes = _serverSocket.Receive(recByte, recByte.Length, 0);
var rcvbt1 = new byte[bytes];
Array.Copy(recByte, 0, rcvbt1, 0, bytes);
var rst = ModBus.HexByteToHexStr(rcvbt1);
ShowMsg(!rst.StartsWith("33") ? "收到消息：" + Encoding.UTF8.GetString(rcvbt1) : "收到消息：" + rst);//33开头的属于modbus码
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}
private static string WriteRead(string hexdata, Socket serverSocket)
{
byte[] recByte = new byte[1024];
var sd = ModBus.HexStrToHexByte(hexdata);//开
serverSocket.Send(sd, sd.Length, 0);
int bytes = serverSocket.Receive(recByte, recByte.Length, 0);
var rcvbt1 = new byte[bytes];
Array.Copy(recByte, 0, rcvbt1, 0, bytes);
var rst = ModBus.HexByteToHexStr(rcvbt1);
var s = rst.Replace("7777772E7573722E636E", "");
if (s == "")//排除第一个空
{
bytes = serverSocket.Receive(recByte, recByte.Length, 0);
rcvbt1 = new byte[bytes];
Array.Copy(recByte, 0, rcvbt1, 0, bytes);
rst = ModBus.HexByteToHexStr(rcvbt1);
s = rst.Replace("7777772E7573722E636E", "");
}
return(s);
}